85-1-306. Provisions for protecting bondholders. Either the resolution providing for the issuance of bonds or the trust indenture may contain provisions for protecting and enforcing the rights and remedies of the bondholders as are reasonable, proper, and not in violation of law, including covenants setting forth the duties of the state and the department in relation to the acquisition, construction, improvement, maintenance, operation, repair, and insurance of the works and the custody, safeguarding, and application of all money. It may provide that the works must be acquired, constructed, or partly acquired and partly constructed and paid for under the supervision and approval of consulting engineers employed or designated by the department and satisfactory to the original purchasers of the bonds issued for the works, or to their successors, assigns, or nominees, who may be given the right to require that security given by contractors and by any depositary of the proceeds of the bonds or receipts and revenue of the works or other money pertaining to the works must be satisfactory to the purchasers, successors, assigns, or nominees. The resolution or indenture may set forth the rights and remedies of the bondholders and trustee, restricting the individual rights of action of bondholders as is customary in trust indentures, deeds of trusts, and mortgages securing bonds or debentures of corporations. The enumeration of particular powers granted by this section may not be construed to impair any general grant of power contained in this chapter. All expenses incurred in carrying out the trust indenture may be treated as a part of the cost of maintenance, operation, and repairs of the works affected by the indenture.